Fix tabs on proton UI (#5985)
Fix tabs on proton UI (#5985)

The `tab_line` property was in proton more notice-able and more likely ugly then rather a niece thing to have.

Resolves #5954
darkreader/darkreader,alexanderby/darkreader,alexanderby/darkreader,darkreader/darkreader,darkreader/darkreader,alexanderby/darkreader